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Application potential of carbon nanotubes in water treatment:A review

Journal of Environmental Sciences 2013年第7期25卷 1263-1280页

作者： Xitong Liu Mengshu Wang Shujuan Zhang Bingcai Pan State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing University

Water treatment is the key to coping with the conflict between people＇s increasing demand for water and the world-wide water shortage. Owing to their unique and tunable structural, physical, and chemical properties, carbon nanotubes （CNTs） have exhibited great potentials in water treatment. This review makes an attempt to provide an overview of potential solutions to various environmental challenges by using CNTs as adsorbents, catalysts or catalyst support, membranes, and electrodes. The merits of incorporating CNT to conventional water-treatment material are emphasized, and the remaining challenges are discussed.

关键词： carbon nanotube adsorption catalysis membrane water treatment

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Constructed wetlands for wastewater treatment and reuse: Two decades of experience from China

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Environmental Research 2025年 279卷 121781页

作者： Lin, Zhiyi Li, Mingjun Yan, Peihao Zhang, Jian Xie, Huijun Wu, Haiming Shandong Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science & Engineering Shandong University Qingdao266237 China College of Chemistry Chemical Engineering and Materials Science Shandong Normal University Jinan250014 China Environment Research Institute Shandong University Qingdao266247 China

Constructed wetlands (CWs) can be used for water purification and ecological restoration through the synergistic effects of substrates, aquatic plants, and microorganisms. This study explored a bibliometric approach to quantitatively evaluate the recent research progress and applications of CWs in China by synthetically analyzing publication output characteristics, research hotspots and quantified China's unique contributions to global CW applications. The results indicated that the number of papers published in the field of CWs has shown an overall upward trend in the past two decades, and the research hotspots mainly focus on the nitrogen and phosphorus removal, microbial community. China has actively supported the investigation and application of CWs for wastewater treatment and reuse. More than 40 species of plants and over 30 types of substrates have been employed in CWs for treating different types of wastewater, such as domestic sewage, industrial effluents, river water, and drinking water. Several successful case studies of full-scale CWs have been selected and summarized to highlight the extensive application of CWs in China and provided a CW localized design framework. © 2025 Elsevier Inc.

关键词： Sewage

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The joint health risks of PM2.5 pollution wave and cold spell in eastern China

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Sustainable Cities and Society 2025年 126卷

作者： Huang, Yujia Yu, Pei Huang, Wenzhong Xu, Rongbin Liu, Yanming Guo, Yuming Huang, Lei State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Xianlin Campus 163 Xianlin Avenue Nanjing210023 China Climate Air Quality Research Unit School of Public and Preventive Medicine Monash University MelbourneVIC3004 Australia Basic Science Center for Energy and Climate Change Beijing100081 China

Based on 1800,669 mortality records collected during 2008–2018, we estimated the mortality risk and identified the vulnerable subpopulations of joint effects of the air pollution wave and the cold spell in eastern China. Here, air pollution waves were defined as daily mean fine particulate matter higher than a threshold (P1/P2/P3/P4: 75/115/120/150 μg/m3) for at least two days. Cold spells were defined as daily mean temperature below a threshold (T1/T2/T3: 10th/5th/2.5th percentile) for at least two days. A quasi-Poisson regression model combined with a distributed lag linear model was used to estimate the city-specific joint effects. When defined by P4T3, the highest pooled relative risks 2.07 (95 %CI: 1.73–2.48) of all-cause mortality was discovered cross Jiangsu province. The strongest relative excess risk due to interaction were observed in Suzhou (P3T3, 4.25, 95 %CI: 3.45–5.23). Generally, higher mortality risks were in cardiovascular disease, respiratory disease, and mental and behavior disorders disease. Moreover, the female, elderly, not married, and higher educated individuals and the residents in coastal and southern cities were more vulnerable to joint events. These findings are crucial for the development of local health and climate policies to reduce the health impacts of extreme weather and air pollution under climate change. © 2025 Elsevier Ltd

关键词： Health risks

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Enhanced copper passivation in pig manure composting through iron nanoparticle amendment

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Science of the Total Environment 2025年 958卷 177950页

作者： Yang, Wenqing Zhong, Yuanping Zhuo, Qian Xiao, Liren Owens, Gary Chen, Zuliang Fujian Provincial Key Lab of Coastal Basin Environment Fujian Polytechnic Normal University Fujian Province Fuqing350300 China Fujian Key Laboratory of Pollution Control & Resource Reuse Fujian Province Fuzhou350007 China Environmental Contaminants Group Future Industries Institute University of South Australia Mawson Lakes Campus SA5095 Australia

As the world's leading producer of pigs, China is now experiencing large-scale pollution derived from agricultural usage of untreated pig manure, where passivation of metal toxicity in pig manure is a major challenge. Here, the effect of green synthesized iron nanoparticle (G-nFe) addition on copper (Cu) transformations during thermophilic aerobic composting of pig manure was investigated. The results revealed that following addition of G-nFe passivation of active Cu forms, including exchangeable (EXC-Cu), carbonate-bound (CAR[sbnd]Cu), and iron and manganese oxide-bound (IMO[sbnd]Cu) Cu increased by 66.8, 47.5, and 15.4 %, respectively. The fraction of Cu bound to organic matter (OM-Cu) also increased with composting and was influenced by G-nFe dose. Notably, addition of 500 mL kg−1 G-nFe increased OM-Cu to 52.9 %. Residual Cu (RES[sbnd]Cu) concentrations initially rose within the first five days of composting, followed by a subsequent decline, demonstrating that G-nFe addition had dual effects: firstly, an initial 31.3 % increase in RES-Cu five days post-G-nFe addition;and secondly, a subsequent 60.9 % reduction over the entire composting process. Furthermore, OM, Humus and Fourier transform infrared (FTIR) analysis confirmed that the increase in OM-Cu, coupled with G-nFe, facilitated the transformation of Cu into OM-Cu fractions post-composting. This work thus provides new insights into how iron nanomaterials can increase passivation of metal ions during composting. © 2024 Elsevier B.V.

关键词： Copper

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Effect of bio-column composed of aged refuse on methane abatement-A novel configuration of biological oxidation in refuse landfill

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Journal of Environmental Sciences 2010年第5期22卷 769-776页

作者： Dan Han Youcai Zhao Binjie Xue Xiaoli Chai State Key Laboratory of Pollution Control and Resource Reuse Tongji University Shanghai 200092 China

An experimental bio-column composed of aged refuse was installed around the exhaust pipe as a new way to mitigate methane in refuse *** of the objectives of this work was to assess the effect of aged refuse thickness in bio-column on reducing CH 4 *** the study period,methane oxidation was observed at various thicknesses,5 cm （small size）,10 cm （middle size） and 15 cm （large size）,representing one to three times of pipeline *** middle and large size both showed over 90% methane conversion,and the highest methane conversion rate of above 95% occurred in the middle-size column ***-Menten equation addressed the methanotrophs diffusion in different layers of the *** methanotrophic activity （V max） measured at the three thicknesses ranged from 6.4 × 10 3 to 15.6 × 10 3 units,and the half-saturation value （K M） ranged from 0.85% to 1.67%.Both the highest V max and K M were observed at the middle-size of the bio-column,as well as the largest methanotrophs population,suggesting a significant efficiency of methane mitigation happened in the optimum zone with greatest affinity and methanotrophic bacteria ***,bio-column is a potential style for methane abatement in landfill,and the aged refuse both naturally formed and artificially placed in the column plays a critical role in CH 4 emission.

关键词： methane landfill aged refuse bio-column thickness

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Simulation and assessment of sludge concentration and rheology in the process of waste activated sludge treatment

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Journal of Environmental Sciences 2009年第12期21卷 1639-1645页

作者： XIA Mingfang WANG Zhiwei WU Zhichao WANG Xinhua ZHOU Zhen LU Jilai State Key Laboratory of Pollution Control and Resource Reuse Nanjing University Nanjing 210093 China State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and Engineering Tongji University Shanghai 200092 China

The process of using flat-sheet membrane for simultaneous sludge thickening and digestion （MSTD） was employed. The variations of sludge concentration and rheology were characterized and simulated. Based on mass balance analysis, mathematical models were developed and successfully used to predict and evaluate the variations of sludge concentration and the digestion efficiency in the MSTD process. The apparent viscosity of sludge could be modeled as functions of mixed liquor suspended solids and shear rates. The sludge in the MSTD process showed both shear-thinning and viscoplastic behaviour, and under various shear rates different rheological models could be chosen to predict their flow behaviour. It was also found that sludge concentration and viscosity had significant correlations with membrane fouling in the MSTD process.

关键词： membrane filtration membrane fouling sludge thickening sludge digestion waste activated sludge

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Effect of coagulation pretreatment on the fouling of ultrafiltration membrane

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Journal of Environmental Sciences 2007年第3期19卷 278-283页

作者： DONG Bing-zhi CHEN Yan GAO Nai-yun FAN Jin-chu State Key Laboratory of Pollution Control and Resource Reuse Tongji University Shanghai 200092 China

The purpose of this study is to understand the effect and mechanism of preventing membrane fouling, by coagulation pretreatment, in terms of fractional component and molecular weight of natural organic matter （NOM）. A relatively higher molecular weight （MW） of hydrophobic compounds was responsible for a rapid decline in the ultrafiltration flux. Coagulation could effectively remove the hydrophobic organics, resulting in the increase of flux. It was found that a lower MW of neutral hydrophilic compounds, which could remove inadequately by coagulation, was responsible for the slow declining flux. The fluxes in the filtration of coagulated water and supernatant water were compared and the results showed that a lower MW of neutral hydrophilic compounds remained in the supernatant water after coagulation could be rejected by a membrane, resulting in fouling. It was also found that the coagulated flocs could absorb neutral hydrophilic compounds effectively. Therefore, with the coagulated flocs formed on the membrane surface, the flux decline could be improved.

关键词： drinking water treatment ultrafiltration coagulation fouling

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Modified oil extraction of pristine and weathered synthetic polyurea microcapsules and polyethylene microplastics from soil

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Microplastics and Nanoplastics 2025年第1期5卷 1-13页

作者： Teggers, Eva-Maria Heck, Svetlana Meisterjahn, Boris Simon, Markus Hennecke, Dieter Heumann, Roman Egger, Holger Dalkmann, Philipp Jahnke, Annika Schäffer, Andreas INVITE GmbH Otto-Bayer-Straße 32 Cologne 51061 Germany Fraunhofer Institute for Molecular Biology and Applied Ecology IME Auf dem Aberg 1 Schmallenberg 57392 Germany Department of Exposure Science Helmholtz Centre for Environmental Research - UFZ Permoserstraße 15 Leipzig 04318 Germany Bayer AG Research & Development Alfred-Nobel-Straße 50 Monheim 40789 Germany Institute for Environmental Research RWTH Aachen University Worringerweg 1 Aachen 52074 Germany State Key Laboratory of Pollution Control and Resource Reuse School of the Environment 163 Xianling Road Nanjing 210023 China Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment Chongqing University 174 Shazheng Street Shapingba Chongqing 400045 China

Microplastics (MPs) in soil are an emerging environmental concern due to their widespread distribution, persistence, potential toxicity to soil organisms, possible transfer into crops and groundwater as well as their potential ability to alter soil functions. MP polymers, such as linear low-density polyethylene (LLDPE) and polyurea (PUA) are commonly applied to soils for mulching and pesticide application and their fate needs to be better understood. For qualitative and quantitative analysis, MPs need to be efficiently isolated from soils using suitable extraction methods. Therefore, we developed a modified oil extraction method using n-octanol and compared it with the widely used density extraction method, both preceded by a potassium hydroxide (KOH) extraction step. Pristine and artificially weathered (light-irradiated) small-sized LLDPE mulch film particles (cryo-milled to a median size of 147 µm) and PUA microcapsules used for pesticide applications (median diameter of 2 µm) were spiked into 25 g samples of two standard agricultural soils. Both MP types differed in size, shape, density and especially their composition, as the PUA microcapsules predominantly consisted of oil. After MP isolation, precise MP quantification was facilitated by ¹⁴C-radiolabelling of the polymers, which enabled accurate mass balancing while eliminating potential interferences from background polymers. The modified oil extraction method, achieved extraction efficiencies of up to 75% of the applied radioactivity (AR), compared to a maximum efficiency of 62%_AR using the conventional density extraction method combined with KOH. © The Author(s) 2025.

关键词： Agricultural soil Extraction methods Isotopic labelling Light-weathered Microcapsules Microplastics Polyethylene Polyurea

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Aquatic ecosystem health assessment in China based on metacommunity theory: From theory to practice

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Carbon Research 2025年第1期4卷 1-4页

作者： Jin, Xiaowei Xie, Huiyu Zhao, Xianfu He, Dekui Zhan, Aibin Cai, Yongjiu Wu, Naicheng Zhang, Xiaowei Yang, Jun Wang, Yeyao Johnson, Andrew C. Wu, Fengchang China National Environmental Monitoring Centre Beijing100012 China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China College of Water Sciences Beijing Normal University Beijing100875 China Key Laboratory of Ecological Impacts of Hydraulic-Projects and Restoration of Aquatic Ecosystem of Ministry of Water Resources Institute of Hydroecology Ministry of Water Resources and Chinese Academy of Sciences Wuhan430079 China Institute of Hydrobiology Chinese Academy of Sciences Wuhan430072 China Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing100085 China Key Laboratory of Lake and Watershed Science for Water Security Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing210008 China Department of Geography and Spatial Information Techniques Ningbo University Ningbo315211 China State Key Laboratory of Pollution Control & Resource Reuse School of the Environment Nanjing University Nanjing210023 China Fujian Key Laboratory of Watershed Ecology Cc Xiamen361021 China Centre for Ecology and Hydrology Oxfordshire WallingfordOX10 8BB United Kingdom

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High-Throughput Identification and Prioritization of Endocrine-Disrupting Chemicals: A Novel Method and its Application in Organic-Contaminated Soil

SSRN

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SSRN 2025年

作者： Han, Tianhao Jin, Jinsha Jin, Mengke Zhang, Rong Fan, Tianle Qu, Changsheng Ding, Liang Nie, Li Guo, Jing Tan, Haoyue Shi, Wei Dalian University of Technology China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China Jiangsu Province Ecology and Environment Protection Key Laboratory of Chemical Safety and Health Risk Nanjing210023 China Key Laboratory of Environmental Remediation and Ecological Health Ministry of Industry and Information Technology Jiangsu Environmental Engineering Technology Co. Ltd Jiangsu Nanjing210019 China

The environmental issues related to endocrine-disrupting chemicals (EDCs) have attracted global attention. Although previous studies have successfully screened EDCs in the environment through high-throughput qualitative methods, identifying key substances quantitatively remains challenging. To address this challenge, a new approach based on machine learning and relative equivalent potency (REP) has been developed to assess key EDCs in complex pollution scenarios. To overcome the challenge of obtaining concentration in high-throughput screening, semi-quantitative models were developed using three machine learning algorithms. The random forest algorithm showed the best performance, achieving R2 values of 0.8662 and 0.8578 for positive and negative ion modes, respectively. The quantitative evaluation of endocrine-disrupting effects, based on the concept of "equivalent toxicity", allows for calculating individual EDC contributions to the bioassay equivalency (BEQ) of a sample, thereby identifying key EDCs. This method was applied to organic-contaminated soil samples from a contaminated site, leading to the detection of 143 EDCs across four categories. 4-Nitrophenol, stearic acid, androstanolone, oxyquinoline, estradiol, triclocarban, 4-octylphenol, triclosan, diarylpropionitrile, and triethanolamine were prioritized among these EDCs. In conclusion, this work presents a quantitative strategy for identifying key EDCs in organic-contaminated soil. This study provides both methodological and data support for controlling and remediating EDC pollution. © 2025, The Authors. All rights reserved.

关键词： Triethanolamine

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